试题与答案

一名同学在低倍镜下观察一临时装片时，视野内看到一黑点。当他移动装片时，黑点不动；当他

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题型：单项选择题

题目：

一名同学在低倍镜下观察一临时装片时，视野内看到一黑点。当他移动装片时，黑点不动；当他换用高信物镜时，黑点还在原处．对这一现象最可能的解释是（）

A.装片上有一黑点

B.反光镜需要清洗

C.物镜需要清洗

D.目镜需要清洗

答案：

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参考答案：D

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题型：阅读理解

What do you want to be when you grow up? A teacher? A doctor? How about an ice-cream taster?

Yes, there really is a job where you can get paid to taste ice cream. Just ask John Harrison an “Official Taste Tester” for the past 21 years. Testing helps manufacturers (制造商) to be sure of a product’s quality. During his career Harrison has been responsible for approving large quantities of the sweet ice cream—as well as for developing over 75 flavors (口味).

Some people think that it would be easy to do this job; after all, you just have to like ice cream, right? No—there’s more to the job than that, says Harrison, who has a degree in chemistry. He points out that a dairy or food-science degree would be very useful to someone wanting a career in this “cool” field.

In a typical morning on the job, Harrison tastes and assesses 60 ice cream samples. He lets the ice cream warm up to about 12℉. Harrison explains: “You get more flavor from warmer ice cream, which is why some kids like to stir (搅拌) it, creating ice-cream soup.”

While the ice cream warms up, Harrison looks over the samples and grades each one its appearance. “Tasting begins with the eyes,” he explains. He checks to see if the ice cream is attractive and asks himself, “Dose the product have the color expected from that flavor?” Next it’s time to taste!

Continuing to think up new ideas, try out new flavors, and test samples from so many kinds of ice cream each day keeps Harrison busy but happy---working at one cool job.

小题1: What is John Harrison’s job?

A．An official.

B．An ice-cream taster.

C．A chemist.

D．An ice-cream manufacturer.小题2:According to John Harrison, to be qualified（合格的） in the “cool field”, it is helpful to ________.

A．keep a diary of work

B．have a degree in related subjects

C．have new ideas every day

D．find out new flavor each day小题3: What does Harrison do first when testing ice cream?

A．He stirs the ice cream.

B．He examines the color of the ice cream.

C．He tastes the flavor of the ice cream.

D．He lets the ice cream warm up.小题4:Which of the following is probably the best title of the passage?

A．Tasting with Eyes

B．Flavors of Ice Cream

C．John Harrison’s Life

D．One Cool Job
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